Fixed gif-loading GetImageSize() bug
Fixed gif-loading GetImageSize() bug

GifLoading::GetImageSize() returned wrong height.
Make it return right height.

Change-Id: I8fc45fbd0df155f38dfb24410b7cd6114f54d5d4
Signed-off-by: minho.sun <df102007110b740670f44c5149a3630825181323@samsung.com>

dalihub/dali-adaptor,dalihub/dali-adaptor,dalihub/dali-adaptor,dalihub/dali-adaptor,dalihub/dali-adaptor